"Depending on your vineyard and whether you had a permanent
cover crop you could have a problem with mud. So if that's the case
and the grapes are ready to go growers are going to get tractors in
there that will handle the mud and one way or the other they'll get
the grapes out."

Frey says as much as 15% of Sonoma County's grapes are still on
the vine.

The growers have little time left; another storm is expected to
begin Thursday.